So we need someone who knows BP genetics now (that's not me, sorry) as to whether a 'pastel mojave ghi' is one of the ones that may tend to "wobble".With all the morph-mixing these days, it's something that just might turn up now & then anyway- IMO.
The tremors indicate muscle weakness. Her hyperventilating sounds quite normal, since BPs do not like to be "soaked"- and some more than others, will "protest".
Try not to worry too much while you find out more, but I would keep an open mind either way as to her health status.